Re: [PATCH v3 1/4] usb: xhci-mtk: use bitfield instead of bool

From: Ikjoon Jang <ikjn@chromium.org>
To: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: Mathias Nyman <mathias.nyman@intel.com>,
	 Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	linux-usb@vger.kernel.org,
	 "moderated list:ARM/Mediatek SoC support"
	<linux-arm-kernel@lists.infradead.org>,
	 "moderated list:ARM/Mediatek SoC support"
	<linux-mediatek@lists.infradead.org>,
	open list <linux-kernel@vger.kernel.org>,
	Eddie Hung <eddie.hung@mediatek.com>,
	Sergei Shtylyov <sergei.shtylyov@gmail.com>
Subject: Re: [PATCH v3 1/4] usb: xhci-mtk: use bitfield instead of bool
Date: Thu, 10 Jun 2021 11:31:25 +0800	[thread overview]
Message-ID: <CAATdQgD+e6FSFfOvmuib14f1-O6w6znH5agf3gP774Qd6udCUw@mail.gmail.com> (raw)
In-Reply-To: <20210507021127.54717-1-chunfeng.yun@mediatek.com>

On Fri, May 7, 2021 at 10:11 AM Chunfeng Yun <chunfeng.yun@mediatek.com> wrote:
>
> Use bitfield instead of bool in struct
>
> Refer to coding-style.rst 17) Using bool:
> "If a structure has many true/false values, consider consolidating
> them into a bitfield with 1 bit members, or using an appropriate
> fixed width type, such as u8."
>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>

Reviewed-and-Tested-by: Ikjoon Jang <ikjn@chromium.org>

> ---
> v3: split @has_ippc out into anather patch suggested by Greg
> v2: add more changelog suggested by Greg
> ---
>  drivers/usb/host/xhci-mtk.h | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h
> index cd3a37bb73e6..94a59b3d178f 100644
> --- a/drivers/usb/host/xhci-mtk.h
> +++ b/drivers/usb/host/xhci-mtk.h
> @@ -138,17 +138,17 @@ struct xhci_hcd_mtk {
>         struct mu3h_sch_bw_info *sch_array;
>         struct list_head bw_ep_chk_list;
>         struct mu3c_ippc_regs __iomem *ippc_regs;
> -       bool has_ippc;
>         int num_u2_ports;
>         int num_u3_ports;
>         int u3p_dis_msk;
>         struct regulator *vusb33;
>         struct regulator *vbus;
>         struct clk_bulk_data clks[BULK_CLKS_NUM];
> -       bool lpm_support;
> -       bool u2_lpm_disable;
> +       unsigned int has_ippc:1;
> +       unsigned int lpm_support:1;
> +       unsigned int u2_lpm_disable:1;
>         /* usb remote wakeup */
> -       bool uwk_en;
> +       unsigned int uwk_en:1;
>         struct regmap *uwk;
>         u32 uwk_reg_base;
>         u32 uwk_vers;
> --
> 2.18.0
>

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